This is the O3D source tree's initial commit to the Chromium tree. It

is not built or referenced at all by the chrome build yet, and doesn't 
yet build in it's new home.  We'll change that shortly.

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@17035 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 169 insertions, 0 deletions

diff --git a/o3d/plugin/cross/stream_manager.h b/o3d/plugin/cross/stream_manager.h
new file mode 100644
index 0000000..f7c6723
--- /dev/null
+++ b/o3d/plugin/cross/stream_manager.h
@@ -0,0 +1,169 @@
+/*
+ * Copyright 2009, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+#ifndef EXPERIMENTAL_O3D_O3DPLUGIN_AUTOGEN_O3D_GLUE_STREAM_MANAGER_H_
+#define EXPERIMENTAL_O3D_O3DPLUGIN_AUTOGEN_O3D_GLUE_STREAM_MANAGER_H_
+
+#include <npapi.h>
+#include <string>
+#include <vector>
+#include "base/scoped_ptr.h"
+#include "core/cross/callback.h"
+#include "plugin/cross/download_stream.h"
+
+namespace glue {
+
+// Stream manager class, to help managing asynchronous loading of URLs into
+// files.
+class StreamManager {
+ public:
+  // TODO : get rid of these horrible callback objects
+  // and use an interface instead
+  typedef o3d::Callback1<DownloadStream*> NewStreamCallback;
+
+  typedef o3d::Callback4<DownloadStream*,
+                         bool,
+                         const std::string &,
+                         const std::string &> FinishedCallback;
+
+  // The signature for these callbacks corresponds to the NPP_WriteReady()
+  // and NPP_Write() calls
+  typedef o3d::ResultCallback1<int32, DownloadStream*> WriteReadyCallback;
+
+  typedef o3d::ResultCallback4<int32,
+                               DownloadStream*,
+                               int32,
+                               int32,
+                               void*> WriteCallback;
+
+  explicit StreamManager(NPP plugin_instance);
+  ~StreamManager();
+
+  // Loads URL into a file, calls finished_callback->Run(success, filename)
+  // when done.
+  //  returns a DownloadStream object (or NULL) if error
+  //   filename is the name of the file where the contents of the URL are
+  //     stored.
+  // LoadURL() takes ownership of new_stream_callback, write_ready_callback,
+  // write_callback, and callback:  They will be deleted once the stream has
+  // completed.
+  DownloadStream *LoadURL(const std::string &url,
+                          NewStreamCallback *new_stream_callback,
+                          WriteReadyCallback *write_ready_callback,
+                          WriteCallback *write_callback,
+                          FinishedCallback *callback,
+                          uint16 stream_type);
+
+  // Manages the NPP_NewStream callback.
+  bool NewStream(NPStream *stream, uint16 *stype);
+  // Manages the NPP_DestroyStream callback.
+  bool DestroyStream(NPStream *stream, NPReason reason);
+  // Manages the NPP_StreamAsFile callback.
+  bool SetStreamFile(NPStream *stream, const char *filename);
+  // Manages the NPP_URLNotify callback.
+  bool URLNotify(const char *url, NPReason reason, void *notifyData);
+
+  // Continuous streaming support
+  int32 WriteReady(NPStream *stream);
+  int32 Write(NPStream *stream, int32 offset, int32 len, void *buffer);
+
+ private:
+  class NPDownloadStream : public DownloadStream {
+   public:
+    NPDownloadStream(const std::string &url,
+                     const std::string &file,
+                     uint16 stream_type,
+                     NPP plugin_instance,
+                     NewStreamCallback *new_stream_callback,
+                     WriteReadyCallback *write_ready_callback,
+                     WriteCallback *write_callback,
+                     FinishedCallback *callback)
+        : url_(url),
+          file_(file),
+          stream_type_(stream_type),
+          plugin_instance_(plugin_instance),
+          stream_(NULL),
+          new_stream_callback_(new_stream_callback),
+          write_ready_callback_(write_ready_callback),
+          write_callback_(write_callback),
+          finished_callback_(callback),
+          bytes_received_(0),
+          state_(STREAM_REQUESTED) {}
+
+    virtual ~NPDownloadStream();
+
+    // DownloadStream interface
+    virtual std::string   GetURL();
+    virtual std::string   GetCachedFile();
+    virtual State         GetState();
+    virtual int           GetReceivedByteCount();
+    virtual size_t        GetStreamLength();
+    virtual void          Cancel();
+
+    // NPAPI stream stuff
+    NPStream              *GetStream() const { return stream_; }
+    bool                  NewStream(NPStream *new_stream, uint16 *stype);
+    bool                  DestroyStream(NPReason reason);
+    bool                  SetStreamFile(const char *filename);
+    bool                  URLNotify(NPReason reason);
+    int32                 WriteReady();
+    int32                 Write(int32 offset, int32 len, void *buffer);
+
+
+   private:
+    std::string url_;
+    std::string file_;
+
+    // stream type (as file or continuous stream)
+    uint16 stream_type_;
+
+    NPP plugin_instance_;
+    NPStream *stream_;
+
+    // callbacks
+    scoped_ptr<NewStreamCallback> new_stream_callback_;
+    scoped_ptr<WriteReadyCallback> write_ready_callback_;
+    scoped_ptr<WriteCallback> write_callback_;
+    scoped_ptr<FinishedCallback> finished_callback_;
+
+    int bytes_received_;
+    State state_;
+  };
+  bool CheckEntry(NPDownloadStream *entry);
+
+  NPP plugin_instance_;
+  std::vector<NPDownloadStream *> entries_;
+};
+
+}  // namespace glue
+
+#endif  // EXPERIMENTAL_O3D_O3DPLUGIN_AUTOGEN_O3D_GLUE_STREAM_MANAGER_H_